Using Libcurl to implement simple HTTP access

Use the simple interface pattern to design an HTTP-access application that obtains HTML files over the network.

#include <stdio.h> #include <stdlib.h> #include <curl/curl.h>                                             Contains Libcurl library file *FP; Defines a file identifier size_t write_data (void *ptr, size_t size, size_t nmemb, Voi   D *stream) {//define callback function to write HTML file to local int written = Fwrite (ptr, size, NMEMB, (FILE *) FP); return written;}                                                      int main (int argc, char *argv[]) {//Run parameter first is URL, second is local file path CURL *curl;                   Defines the Curl identifier pointer curl_global_init (Curl_global_all);                                         Initialize Libcurl curl = Curl_easy_init ();           Create a Curl identifier curl_easy_setopt (curl, Curlopt_url, argv[1]); Set the first run parameter to the URL to be accessed if (fp = fopen (Argv[2], "w") = = NULL) {//To create the file as a path with the second parameter set puts ("Enter the correct form to save      File name ");                         Curl_easy_cleanup (curl);        Clear Curl Identifier return 1 on error;   } curl_easy_setopt (Curl, curlopt_writefunction, write_data);                                   Set the callback function name Curl_easy_perform (curl);                                      Start data transfer, execute callback Curl_easy_cleanup (curl) after end; Clears the curl identifier return 0;}

Using Libcurl to implement simple HTTP access